If you have any concerns about a mathematics course or  instructor, the best approach is to contact the instructor about these concerns as soon as possible.  If you are concerned about a teaching assistant, you may choose to contact either the TA or the instructor or both. If you are unable to resolve the issue by talking to the TA or the instructor,  you may contact Brooke Miller in the Student Services Office, Padelford C-36 (543-6830).  If you are still not satisfied with the response  you receive, you may contact the department chair, Selim Tuncel, in Padelford C-138 (543-1151).  For your reference,  these procedures are posted on the  bulletin board next to the Student Services Office, Padelford C-36, and on the Math Department Web site.